Earlier today we published an analysis of the top traffic drivers in social media, based on data from Web analytics company Woopra. The biggest traffic driver was StumbleUpon (51%), followed by Digg (30%), Hacker News (12%) and Reddit (5%). Surprisingly, tech news community Slashdot was not in the list of top referrers. In fact, according to Woopra CEO John Pozadzides, Slashdot "drives close to 0% of traffic to the sites Woopra measures."

A couple of months ago we collected some data on how many WordPress-powered sites we host. We knew it had to be a pretty large amount because we see them constantly. It turns out that we are hosting nearly 500,000 WordPress websites! Out of about 1 million total domain names hosted, that means that almost half of them have at least one WordPress blog.